Lemmer DC5550, Manual

Page: 25 / 45

Troubleshooting
Fluid is spitting from gun Air in pump or hose. Check and tighten all fluid
connections. Cycle pump as slowly as
possible during priming.
Spray tip is partially clogged. Clear tip. See Cleanup
Fluid supply is low or empty. Refill fluid supply. Prime pump. See
pump manual. Check fluid supply
often to prevent running pump dry.
Pump is difficult to prime Air in pump or hose. Check and tighten all fluid
connections. Cycle pump as slowly as
possible during priming.
Intake valve is leaking. Clean intake valve. Be sure ball seat
is not nicked or worn and that ball
seats well. Reassemble valve.
Pump packings are worn. Replace pump packings. See pump
manual.
Paint is too thick. Thin the paint according to supplier
recommendations.
Sprayer operates for 5 to 10 minutes
then stops
Pump packing nut too tight. When
pump packing nut is too tight the
packings on the pump rod restrict
pump action and overloads the motor.
Loosen pump packing nut. Check for
leaks around throat. If necessary,
replace pump packings. See Pump
manual.
Problem
What to Check
If check is OK, go to next
check
What to Do
When check is not OK,
refer to this column
25